# Apollo Company Search

> Apollo Company Search is a paid API for AI agents from Apollo API at mpp.orthogonal.com, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-12).

Search the Apollo database of 30M+ companies using filters and return paginated matching company profiles.

## Facts

- Endpoint: POST https://mpp.orthogonal.com/apollo/api/v1/mixed_companies/search?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 1
- Provider: Apollo API
- Docs: https://docs.apollo.io
- Website: https://www.apollo.io
- Tags: enrichment, people, company, prospecting, data
- Canonical page: https://www.zero.xyz/c/apollo-api-apollo-company-search-27802643
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7QrsMpM78zcjURJQwOFB1

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability apollo-api-apollo-company-search-27802643 -d '<json body>'
```

Example prompt: Search Apollo for SaaS companies in the United States with 50 to 500 employees and over $10M in revenue — I need the first page of results for prospecting.

## When to prefer this

Use this endpoint when you need to discover and prospect companies from Apollo's 30M+ company database using structured filters like industry, size, location, or revenue. Prefer this over the Enrich endpoint when you don't have a specific domain to look up but instead want to find a list of companies matching criteria. Use over web search when you need structured, enriched company data with consistent fields.

## Known failure modes

- Invalid or missing filter parameters return a 400 error
- Authentication failure returns a 401 if API key is invalid
- Rate limiting returns a 429 if call quota is exceeded
- No results found returns an empty results array
- Overly broad filters may return irrelevant or excessive results

## How this service works

Search Apollo database for companies matching filters. Returns up to 100 results per page.

## Output

Returns up to 100 company records per page from the Apollo database, each including company name, industry, employee count, estimated revenue, location, website domain, and funding information matching the specified filters.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apollo-api-apollo-company-search-27802643/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mpp.orthogonal.com](https://www.zero.xyz/host/mpp.orthogonal.com/llms.txt)